package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.StatusConstant;
import com.sky.dto.SetmealDTO;
import com.sky.dto.SetmealPageQueryDTO;
import com.sky.entity.Setmeal;
import com.sky.entity.SetmealDish;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealDishMapper;
import com.sky.mapper.SetmealMapper;
import com.sky.result.PageResult;
import com.sky.service.SetmealService;
import com.sky.vo.DishItemVO;
import com.sky.vo.SetmealVO;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import java.util.stream.Collector;
import java.util.stream.Collectors;

@Service
@Slf4j

public class SetmealServiceImpl implements SetmealService {

    @Autowired
    private SetmealDishMapper setmealDishMapper;

    @Autowired
    private SetmealMapper setmealMapper;

    @Autowired
    private DishMapper dishMapper;


    //新增套餐
    @Override
    public void saveWithDish(SetmealDTO setmealDTO) {
        log.info("新增套餐：{}", setmealDTO);
        Setmeal setmeal = new Setmeal();
        BeanUtils.copyProperties(setmealDTO, setmeal);
        //插入套餐数据
        setmealMapper.insert(setmeal);
        //获取主键生成的套餐id
        Long setmealId = setmeal.getId();

        //批量插入菜品关联数据
        List<SetmealDish> setmealDishes = setmealDTO.getSetmealDishes();
        setmealDishes.forEach(setmealDish -> setmealDish.setSetmealId(setmealId));

        //插入菜品数据
        setmealDishMapper.insertBatch(setmealDishes);
    }

    //套餐分页查询
    @Override
    public PageResult pageQuery(SetmealPageQueryDTO setmealPageQueryDTO) {
        int pageNum = setmealPageQueryDTO.getPage();
        int pageSize = setmealPageQueryDTO.getPageSize();
        PageHelper.startPage(pageNum, pageSize);

        Page<SetmealVO> page = setmealMapper.pageQuery(setmealPageQueryDTO);
        return new PageResult(page.getTotal(), page.getResult());
    }

    //批量删除套餐
    @Override
    public void delete(List<Long> ids) {
        //判断套餐是否在售
        ids.forEach(id -> {
            Setmeal setmeal = setmealMapper.getById(id);
            if (setmeal.getStatus() == StatusConstant.ENABLE) {
                throw new RuntimeException("套餐正在售出中，不能删除");
            }
        });
        //删除套餐
        setmealMapper.delete(ids);
        //删除套餐和菜品的关联数据
        setmealDishMapper.deleteBySetmealId(ids);

    }

    //查询回显套餐
    @Override
    public SetmealVO getByIdWithDish(Long id) {
        //查询套餐数据
        Setmeal setmeal = setmealMapper.getById(id);

        //查询套餐和菜品的关联数据
        List<SetmealDish> setmealDishes = setmealDishMapper.getBySetmealId(id);
        SetmealVO setmealVO = new SetmealVO();
        BeanUtils.copyProperties(setmeal, setmealVO);
        setmealVO.setSetmealDishes(setmealDishes);
        return setmealVO;
    }

    //修改套餐
    @Override
    @Transactional
    public void update(SetmealDTO setmealDTO) {
        Setmeal setmeal = new Setmeal();
        BeanUtils.copyProperties(setmealDTO, setmeal);
        setmealMapper.update(setmeal);
        //删除套餐和菜品的关联id
        Long setmealId = setmealDTO.getId();
        ArrayList<Long> setmealIds = new ArrayList();
        setmealIds.add(setmealId);
        //先删再加
        setmealDishMapper.deleteBySetmealId(setmealIds);

        List<SetmealDish> setmealDishes = setmealDTO.getSetmealDishes();

        setmealDishes.forEach(setmealDish -> setmealDish.setSetmealId(setmealId));
        setmealDishMapper.insertBatch(setmealDishes);

    }

    //套餐起售停售
    @Override
    public void startOrStop(Integer status, Long id) {
        Setmeal setmeal = Setmeal.builder()
                .id(id)
                .status(status)
                .build();
                setmealMapper.update(setmeal);

    }
    /**
     * 条件查询
     * @param setmeal
     * @return
     */
    public List<Setmeal> list(Setmeal setmeal) {
        List<Setmeal> list = setmealMapper.list(setmeal);
        return list;
    }

    /**
     * 根据id查询菜品选项
     * @param id
     * @return
     */
    public List<DishItemVO> getDishItemById(Long id) {
        return setmealMapper.getDishItemBySetmealId(id);
    }



}
